message_filters-related issue

boost

asked 2011-12-22 08:32:10 -0500

alfa_80
1051 ●123 ●137 ●150

updated 2014-01-28 17:11:02 -0500

ngrennan
1 ●1 ●1

I was following a tutorial on message_filters in order to subscribe to 2 different topics of different type and later use it in a callback function. However, I got a weird long error message as follow:

In file included from /usr/include/boost/bind.hpp:22,
                 from /opt/ros/electric/stacks/ros_comm/clients/cpp/roscpp/include/ros/publisher.h:35,
                 from /opt/ros/electric/stacks/ros_comm/clients/cpp/roscpp/include/ros/node_handle.h:32,
                 from /opt/ros/electric/stacks/ros_comm/clients/cpp/roscpp/include/ros/ros.h:45,
                 from /home/shah/code/ros_workspace/point_cloud_drone/src/pointcloud_builder_node.cpp:1:
/usr/include/boost/bind/bind.hpp: In member function ‘void boost::_bi::list3<A1, A2, A3>::operator()(boost::_bi::type<void>, F&, A&, int) [with F = boost::_mfi::mf2<void, PointCloudBuilder, const geometry_msgs::PoseStampedConstPtr&, const geometry_msgs::Pose2DConstPtr&>, A = boost::_bi::list9<const boost::shared_ptr<const geometry_msgs::PoseStamped_<std::allocator<void> > >&, const boost::shared_ptr<const geometry_msgs::Pose2D_<std::allocator<void> > >&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&>, A1 = boost::arg<1>, A2 = boost::arg<2>, A3 = boost::_bi::value<PointCloudBuilder*>]’:
/usr/include/boost/bind/bind_template.hpp:305:   instantiated from ‘typename boost::_bi::result_traits<R, F>::type boost::_bi::bind_t<R, F, L>::operator()(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&, const A9&) [with A1 = boost::shared_ptr<const geometry_msgs::PoseStamped_<std::allocator<void> > >, A2 = boost::shared_ptr<const geometry_msgs::Pose2D_<std::allocator<void> > >, A3 = boost::shared_ptr<const message_filters::NullType>, A4 = boost::shared_ptr<const message_filters::NullType>, A5 = boost::shared_ptr<const message_filters::NullType>, A6 = boost::shared_ptr<const message_filters::NullType>, A7 = boost::shared_ptr<const message_filters::NullType>, A8 = boost::shared_ptr<const message_filters::NullType>, A9 = boost::shared_ptr<const message_filters::NullType>, R = void, F = boost::_mfi::mf2<void, PointCloudBuilder, const geometry_msgs::PoseStampedConstPtr&, const geometry_msgs::Pose2DConstPtr&>, L = boost::_bi::list3<boost::arg<1>, boost::arg<2>, boost::_bi::value<PointCloudBuilder*> >]’
/usr/include/boost/bind/bind.hpp:820:   instantiated from ‘void boost::_bi::list9<A1, A2, A3, A4, A5, A6, A7, A8, A9>::operator()(boost::_bi::type<void>, F&, A&, int) [with F = boost::_bi::bind_t<void, boost::_mfi::mf2<void, PointCloudBuilder, const geometry_msgs::PoseStampedConstPtr&, const geometry_msgs::Pose2DConstPtr&>, boost::_bi::list3<boost::arg<1>, boost::arg<2>, boost::_bi::value<PointCloudBuilder*> > >, A = boost::_bi::list9<const boost::shared_ptr<const geometry_msgs::PoseStamped_<std::allocator<void> > >&, const boost::shared_ptr<const geometry_msgs::Pose2D_<std::allocator<void> > >&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&, const boost::shared_ptr<const message_filters::NullType>&>, A1 = boost::arg<1>, A2 = boost::arg<2>, A3 = boost::arg<3>, A4 = boost::arg<4>, A5 = boost::arg<5>, A6 = boost::arg<6>, A7 = boost::arg<7>, A8 = boost::arg<8>, A9 = boost ...

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answered 2011-12-25 12:40:22 -0500

dornhege

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I'm not sure, but maybe the this should be the 2nd and not the last parameter to bind.

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Yes, I think you're right too, I've put *this* pointer the second argument, but, it's still not working.

alfa_80 ( 2011-12-25 19:36:45 -0500 )edit

First, you might try to simple edit the sample code with your message types to confirm the callback is called. There is one thing to note: AFAIK the Timesynchronizer needs exact timestamp matches, not approximate ones.

dornhege ( 2011-12-26 12:10:33 -0500 )edit

What do you mean by "edit the sample code with your message types"? I've used the sample code with my message types already as shown in the above code snippet, or I misunderstood something?

alfa_80 ( 2011-12-26 16:42:33 -0500 )edit

You modified more and built that into your program. If you solely use the sample program everything should be alright there and you can check if it works with your data.

dornhege ( 2011-12-27 02:45:16 -0500 )edit

I got your point. The only thing I need is that running an image publisher, which I don't have, or something on the net related, that I can easily use it.

alfa_80 ( 2011-12-27 03:01:55 -0500 )edit

I'm now not getting any compile error, but, it seems that it doesn't enter the callback function, as I try to "ROS_INFO" in the function and look the output in rxconsole.

alfa_80 ( 2012-01-07 14:15:51 -0500 )edit

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